Add a driver for ACPI "Watchdog Resource Table" devices.
acpiwdrt0 at acpi0: mem 0xfed01000,0xfed01004 acpiwdrt0: PCI 0:000:00:0 vendor 0x1106 product 0x3337 acpiwdrt0: watchdog interval 1-1023 sec.
This commit is contained in:
jmcneill
parent
09292cecb8
commit
27686d11fe
@ -1,4 +1,4 @@
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/* $NetBSD: acpi.c,v 1.233 2011/01/13 05:58:05 jruoho Exp $ */
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/* $NetBSD: acpi.c,v 1.234 2011/01/17 15:49:13 jmcneill Exp $ */
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/*-
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* Copyright (c) 2003, 2007 The NetBSD Foundation, Inc.
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@ -100,7 +100,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.233 2011/01/13 05:58:05 jruoho Exp $");
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__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.234 2011/01/17 15:49:13 jmcneill Exp $");
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#include "opt_acpi.h"
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#include "opt_pcifixup.h"
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@ -613,6 +613,8 @@ acpi_childdet(device_t self, device_t child)
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if (sc->sc_apmbus == child)
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sc->sc_apmbus = NULL;
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if (sc->sc_wdrt == child)
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sc->sc_wdrt = NULL;
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SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) {
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@ -806,6 +808,10 @@ acpi_rescan(device_t self, const char *ifattr, const int *locators)
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sc->sc_apmbus = config_found_ia(sc->sc_dev,
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"acpiapmbus", NULL, NULL);
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if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL)
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sc->sc_wdrt = config_found_ia(sc->sc_dev,
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"acpiwdrtbus", NULL, NULL);
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return 0;
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}
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434
sys/dev/acpi/acpi_wdrt.c
Normal file
434
sys/dev/acpi/acpi_wdrt.c
Normal file
@ -0,0 +1,434 @@
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/* $NetBSD: acpi_wdrt.c,v 1.1 2011/01/17 15:49:13 jmcneill Exp $ */
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/*
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* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* ACPI "WDRT" watchdog support, based on:
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*
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* Watchdog Timer Hardware Requirements for Windows Server 2003, version 1.01
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* http://www.microsoft.com/whdc/system/sysinternals/watchdog.mspx
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*/
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/* #define ACPIWDRT_DEBUG */
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: acpi_wdrt.c,v 1.1 2011/01/17 15:49:13 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/sysmon/sysmonvar.h>
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#define _COMPONENT ACPI_RESOURCE_COMPONENT
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ACPI_MODULE_NAME ("acpi_wdrt")
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#ifdef ACPIWDRT_DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x) do { } while (0)
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#endif
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/* Watchdog Control/Status Register (32 bits) */
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#define ACPI_WDRT_CSR_RUNSTOP (1 << 0) /* rw */
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#define ACPI_WDRT_RUNSTOP_STOPPED (0 << 0)
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#define ACPI_WDRT_RUNSTOP_RUNNING (1 << 0)
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#define ACPI_WDRT_CSR_FIRED (1 << 1) /* rw */
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#define ACPI_WDRT_CSR_ACTION (1 << 2) /* rw */
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#define ACPI_WDRT_ACTION_RESET (0 << 2)
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#define ACPI_WDRT_ACTION_POWEROFF (1 << 2)
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#define ACPI_WDRT_CSR_WDOGEN (1 << 3) /* ro */
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#define ACPI_WDRT_WDOGEN_ENABLE (0 << 3)
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#define ACPI_WDRT_WDOGEN_DISABLE (1 << 3)
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#define ACPI_WDRT_CSR_TRIGGER (1 << 7) /* wo */
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/* Watchdog Count Register (32 bits) */
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#define ACPI_WDRT_COUNT_DATA_MASK 0xffff
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/* Watchdog Resource Table - Units */
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#define ACPI_WDRT_UNITS_1S 0x0
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#define ACPI_WDRT_UNITS_100MS 0x1
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#define ACPI_WDRT_UNITS_10MS 0x2
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struct acpi_wdrt_softc {
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device_t sc_dev;
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bus_space_tag_t sc_memt;
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bus_space_handle_t sc_memh;
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struct sysmon_wdog sc_smw;
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bool sc_smw_valid;
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uint32_t sc_max_period;
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unsigned int sc_period_scale;
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ACPI_GENERIC_ADDRESS sc_control_reg;
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ACPI_GENERIC_ADDRESS sc_count_reg;
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};
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static int acpi_wdrt_match(device_t, cfdata_t, void *);
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static void acpi_wdrt_attach(device_t, device_t, void *);
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static int acpi_wdrt_detach(device_t, int);
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static bool acpi_wdrt_suspend(device_t, const pmf_qual_t *);
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static int acpi_wdrt_setmode(struct sysmon_wdog *);
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static int acpi_wdrt_tickle(struct sysmon_wdog *);
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static ACPI_STATUS acpi_wdrt_read_control(struct acpi_wdrt_softc *, uint32_t *);
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static ACPI_STATUS acpi_wdrt_write_control(struct acpi_wdrt_softc *, uint32_t);
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#if 0
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static ACPI_STATUS acpi_wdrt_read_count(struct acpi_wdrt_softc *, uint32_t *);
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#endif
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static ACPI_STATUS acpi_wdrt_write_count(struct acpi_wdrt_softc *, uint32_t);
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CFATTACH_DECL_NEW(
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acpiwdrt,
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sizeof(struct acpi_wdrt_softc),
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acpi_wdrt_match,
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acpi_wdrt_attach,
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acpi_wdrt_detach,
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NULL
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);
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static int
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acpi_wdrt_match(device_t parent, cfdata_t match, void *opaque)
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{
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ACPI_TABLE_WDRT *wdrt;
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ACPI_STATUS rv;
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uint32_t val;
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rv = AcpiGetTable(ACPI_SIG_WDRT, 1, (ACPI_TABLE_HEADER **)&wdrt);
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if (ACPI_FAILURE(rv))
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return 0;
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/* Only system memory address spaces are allowed */
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if (wdrt->ControlRegister.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY ||
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wdrt->CountRegister.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) {
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return 0;
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}
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/* Sanity check control & count register addresses */
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if (wdrt->ControlRegister.Address == 0 ||
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wdrt->ControlRegister.Address == 0xffffffff ||
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wdrt->ControlRegister.Address == 0xffffffffffffffff ||
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wdrt->CountRegister.Address == 0 ||
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wdrt->CountRegister.Address == 0xffffffff ||
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wdrt->CountRegister.Address == 0xffffffffffffffff) {
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return 0;
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}
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/* Read control regster */
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rv = AcpiOsReadMemory(wdrt->ControlRegister.Address, &val,
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wdrt->ControlRegister.BitWidth);
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if (ACPI_FAILURE(rv))
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return 0;
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/* Make sure the hardware watchdog is enabled */
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if ((val & ACPI_WDRT_CSR_WDOGEN) == ACPI_WDRT_WDOGEN_DISABLE)
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return 0;
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return 1;
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}
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static void
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acpi_wdrt_attach(device_t parent, device_t self, void *opaque)
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{
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struct acpi_wdrt_softc *sc = device_private(self);
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ACPI_TABLE_WDRT *wdrt;
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ACPI_STATUS rv;
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sc->sc_dev = self;
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pmf_device_register(self, acpi_wdrt_suspend, NULL);
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rv = AcpiGetTable(ACPI_SIG_WDRT, 1, (ACPI_TABLE_HEADER **)&wdrt);
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if (ACPI_FAILURE(rv)) {
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aprint_error(": couldn't get WDRT (%s)\n",
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AcpiFormatException(rv));
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return;
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}
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/* Maximum counter value must be 511 - 65535 */
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if (wdrt->MaxCount < 511) {
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aprint_error(": maximum counter value out of range (%d)\n",
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wdrt->MaxCount);
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return;
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}
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/* Counter units can be 1s, 100ms, or 10ms */
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switch (wdrt->Units) {
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case ACPI_WDRT_UNITS_1S:
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case ACPI_WDRT_UNITS_100MS:
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case ACPI_WDRT_UNITS_10MS:
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break;
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default:
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aprint_error(": units not supported (0x%x)\n", wdrt->Units);
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return;
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}
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sc->sc_control_reg = wdrt->ControlRegister;
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sc->sc_count_reg = wdrt->CountRegister;
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aprint_naive("\n");
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aprint_normal(": mem 0x%llx,0x%llx\n",
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sc->sc_control_reg.Address, sc->sc_count_reg.Address);
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if (wdrt->PciVendorId != 0xffff && wdrt->PciDeviceId != 0xffff) {
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aprint_verbose_dev(sc->sc_dev, "PCI %u:%03u:%02u:%01u",
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wdrt->PciSegment, wdrt->PciBus, wdrt->PciDevice,
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wdrt->PciFunction);
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aprint_verbose(" vendor 0x%04x product 0x%04x\n",
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wdrt->PciVendorId, wdrt->PciDeviceId);
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}
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sc->sc_max_period = wdrt->MaxCount;
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sc->sc_period_scale = 1;
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if (wdrt->Units == ACPI_WDRT_UNITS_100MS)
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sc->sc_period_scale = 10;
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if (wdrt->Units == ACPI_WDRT_UNITS_10MS)
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sc->sc_period_scale = 100;
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sc->sc_max_period /= sc->sc_period_scale;
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aprint_normal_dev(self, "watchdog interval 1-%d sec.\n",
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sc->sc_max_period);
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sc->sc_smw.smw_name = device_xname(self);
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sc->sc_smw.smw_cookie = sc;
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sc->sc_smw.smw_setmode = acpi_wdrt_setmode;
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sc->sc_smw.smw_tickle = acpi_wdrt_tickle;
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sc->sc_smw.smw_period = sc->sc_max_period;
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if (sysmon_wdog_register(&sc->sc_smw))
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aprint_error_dev(self, "couldn't register with sysmon\n");
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else
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sc->sc_smw_valid = true;
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}
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static int
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acpi_wdrt_detach(device_t self, int flags)
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{
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struct acpi_wdrt_softc *sc = device_private(self);
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/* Don't allow detach if watchdog is armed */
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if (sc->sc_smw_valid &&
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(sc->sc_smw.smw_mode & WDOG_MODE_MASK) != WDOG_MODE_DISARMED)
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return EBUSY;
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if (sc->sc_smw_valid) {
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sysmon_wdog_unregister(&sc->sc_smw);
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sc->sc_smw_valid = false;
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}
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pmf_device_deregister(self);
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return 0;
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}
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static bool
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acpi_wdrt_suspend(device_t self, const pmf_qual_t *qual)
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{
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struct acpi_wdrt_softc *sc = device_private(self);
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if (sc->sc_smw_valid == false)
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return true;
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/* Don't allow suspend if watchdog is armed */
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if ((sc->sc_smw.smw_mode & WDOG_MODE_MASK) != WDOG_MODE_DISARMED)
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return false;
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return true;
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}
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static int
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acpi_wdrt_setmode(struct sysmon_wdog *smw)
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{
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struct acpi_wdrt_softc *sc = smw->smw_cookie;
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uint32_t val;
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DPRINTF(("%s: %s mode 0x%x period %u\n", device_xname(sc->sc_dev),
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__func__, smw->smw_mode, smw->smw_period));
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switch (smw->smw_mode & WDOG_MODE_MASK) {
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case WDOG_MODE_DISARMED:
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/* Disable watchdog timer */
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if (ACPI_FAILURE(acpi_wdrt_read_control(sc, &val)))
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goto failed;
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val &= ~ACPI_WDRT_CSR_RUNSTOP;
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val |= ACPI_WDRT_RUNSTOP_STOPPED;
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if (ACPI_FAILURE(acpi_wdrt_write_control(sc, val)))
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goto failed;
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break;
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default:
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if (smw->smw_period == 0)
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return EINVAL;
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if (smw->smw_period > sc->sc_max_period)
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smw->smw_period = sc->sc_max_period;
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/* Enable watchdog timer */
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if (ACPI_FAILURE(acpi_wdrt_read_control(sc, &val)))
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goto failed;
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val &= ~ACPI_WDRT_CSR_RUNSTOP;
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val &= ~ACPI_WDRT_CSR_ACTION;
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val |= ACPI_WDRT_ACTION_RESET;
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if (ACPI_FAILURE(acpi_wdrt_write_control(sc, val)))
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goto failed;
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/* Reset count register */
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if (acpi_wdrt_tickle(smw))
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goto failed;
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val |= ACPI_WDRT_RUNSTOP_RUNNING;
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if (ACPI_FAILURE(acpi_wdrt_write_control(sc, val)))
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goto failed;
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break;
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}
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return 0;
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failed:
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return EIO;
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}
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static int
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acpi_wdrt_tickle(struct sysmon_wdog *smw)
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{
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struct acpi_wdrt_softc *sc = smw->smw_cookie;
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uint32_t val;
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DPRINTF(("%s: %s mode 0x%x period %u\n", device_xname(sc->sc_dev),
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__func__, smw->smw_mode, smw->smw_period));
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/* Reset count register */
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val = smw->smw_period * sc->sc_period_scale;
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if (ACPI_FAILURE(acpi_wdrt_write_count(sc, val)))
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return EIO;
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/* Trigger new count interval */
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if (ACPI_FAILURE(acpi_wdrt_read_control(sc, &val)))
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return EIO;
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val |= ACPI_WDRT_CSR_TRIGGER;
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if (ACPI_FAILURE(acpi_wdrt_write_control(sc, val)))
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return EIO;
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return 0;
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}
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static ACPI_STATUS
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acpi_wdrt_read_control(struct acpi_wdrt_softc *sc, uint32_t *val)
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{
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ACPI_STATUS rv;
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KASSERT(sc->sc_smw_valid == true);
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rv = AcpiOsReadMemory(sc->sc_control_reg.Address,
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val, sc->sc_control_reg.BitWidth);
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DPRINTF(("%s: %s 0x%llx/%u 0x%08x (%u)\n", device_xname(sc->sc_dev),
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__func__, sc->sc_control_reg.Address, sc->sc_control_reg.BitWidth,
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*val, rv));
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return rv;
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}
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static ACPI_STATUS
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acpi_wdrt_write_control(struct acpi_wdrt_softc *sc, uint32_t val)
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{
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ACPI_STATUS rv;
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KASSERT(sc->sc_smw_valid == true);
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rv = AcpiOsWriteMemory(sc->sc_control_reg.Address,
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val, sc->sc_control_reg.BitWidth);
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DPRINTF(("%s: %s 0x%llx/%u 0x%08x (%u)\n", device_xname(sc->sc_dev),
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__func__, sc->sc_control_reg.Address, sc->sc_control_reg.BitWidth,
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val, rv));
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return rv;
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}
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#if 0
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static ACPI_STATUS
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acpi_wdrt_read_count(struct acpi_wdrt_softc *sc, uint32_t *val)
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{
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ACPI_STATUS rv;
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KASSERT(sc->sc_smw_valid == true);
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rv = AcpiOsReadMemory(sc->sc_count_reg.Address,
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val, sc->sc_count_reg.BitWidth);
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DPRINTF(("%s: %s 0x%llx/%u 0x%08x (%u)\n", device_xname(sc->sc_dev),
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__func__, sc->sc_count_reg.Address, sc->sc_count_reg.BitWidth,
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*val, rv));
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return rv;
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}
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#endif
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static ACPI_STATUS
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acpi_wdrt_write_count(struct acpi_wdrt_softc *sc, uint32_t val)
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{
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ACPI_STATUS rv;
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KASSERT(sc->sc_smw_valid == true);
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rv = AcpiOsWriteMemory(sc->sc_count_reg.Address,
|
||||
val, sc->sc_count_reg.BitWidth);
|
||||
|
||||
DPRINTF(("%s: %s 0x%llx/%u 0x%08x (%u)\n", device_xname(sc->sc_dev),
|
||||
__func__, sc->sc_count_reg.Address, sc->sc_count_reg.BitWidth,
|
||||
val, rv));
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
MODULE(MODULE_CLASS_DRIVER, acpiwdrt, NULL);
|
||||
|
||||
#ifdef _MODULE
|
||||
#include "ioconf.c"
|
||||
#endif
|
||||
|
||||
static int
|
||||
acpiwdrt_modcmd(modcmd_t cmd, void *opaque)
|
||||
{
|
||||
int error = 0;
|
||||
|
||||
switch (cmd) {
|
||||
case MODULE_CMD_INIT:
|
||||
#ifdef _MODULE
|
||||
error = config_init_component(cfdriver_ioconf_acpiwdrt,
|
||||
cfattach_ioconf_acpiwdrt, cfdata_ioconf_acpiwdrt);
|
||||
#endif
|
||||
return error;
|
||||
case MODULE_CMD_FINI:
|
||||
#ifdef _MODULE
|
||||
error = config_fini_component(cfdriver_ioconf_acpiwdrt,
|
||||
cfattach_ioconf_acpiwdrt, cfdata_ioconf_acpiwdrt);
|
||||
#endif
|
||||
return error;
|
||||
default:
|
||||
return ENOTTY;
|
||||
}
|
||||
}
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: acpivar.h,v 1.66 2011/01/13 05:14:48 jruoho Exp $ */
|
||||
/* $NetBSD: acpivar.h,v 1.67 2011/01/17 15:49:13 jmcneill Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright 2001 Wasabi Systems, Inc.
|
||||
@ -149,6 +149,8 @@ struct acpi_softc {
|
||||
device_t sc_dev; /* base device info */
|
||||
device_t sc_apmbus; /* APM pseudo-bus */
|
||||
|
||||
device_t sc_wdrt; /* WDRT watchdog */
|
||||
|
||||
struct acpi_devnode *sc_root; /* root of the device tree */
|
||||
|
||||
bus_space_tag_t sc_iot; /* PCI I/O space tag */
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
# $NetBSD: files.acpi,v 1.84 2011/01/09 15:12:34 jruoho Exp $
|
||||
# $NetBSD: files.acpi,v 1.85 2011/01/17 15:49:13 jmcneill Exp $
|
||||
|
||||
include "dev/acpi/acpica/files.acpica"
|
||||
|
||||
@ -10,8 +10,9 @@ defparam opt_acpi.h ACPI_BLACKLIST_YEAR = 2000
|
||||
define acpiapmbus { }
|
||||
define acpinodebus { }
|
||||
define acpiecdtbus { }
|
||||
define acpiwdrtbus { }
|
||||
|
||||
device acpi: acpica, acpiapmbus, acpinodebus, acpiecdtbus, sysmon_power, sysmon_taskq
|
||||
device acpi: acpica, acpiapmbus, acpinodebus, acpiecdtbus, acpiwdrtbus, sysmon_power, sysmon_taskq
|
||||
attach acpi at acpibus
|
||||
file dev/acpi/acpi.c acpi
|
||||
file dev/acpi/acpi_debug.c acpi
|
||||
@ -88,6 +89,11 @@ device acpitz: sysmon_envsys
|
||||
attach acpitz at acpinodebus
|
||||
file dev/acpi/acpi_tz.c acpitz
|
||||
|
||||
# ACPI Watchdog Timer
|
||||
device acpiwdrt
|
||||
attach acpiwdrt at acpiwdrtbus
|
||||
file dev/acpi/acpi_wdrt.c acpiwdrt
|
||||
|
||||
# Serial interface
|
||||
attach com at acpinodebus with com_acpi
|
||||
file dev/acpi/com_acpi.c com_acpi
|
||||
|
||||
Loading…
Reference in New Issue
Block a user